170 FOKESTKY WOEK 



the underside of leaves. Bright red in colour, changing 

 to brown. 



Dryophanta Scutellaris. The cherry gall, about the 

 size of a small cherry, red and green in colour. 



Aphilothrix Fecundatrix. The hop gall, resembles a 

 hop flower. Inside is a second gall shaped exactly like 

 an acorn. 



Neuroterus Numismatis. The button gall. Circular, 

 with deep depression in centre. 



Neuroterus Lenticularis. The spangle gall. Circular, 

 raised in centre, 



Neuroterus Fumipennis. Smaller, but of a brighter red 

 than the spangle gall, not raised in centre. 

 Fungi. 



Polyporus Sulphur eus (Red Rot). Infection takes place 

 through a branch wound, causing the wood to become 

 brown and dry. The sporophores are soft yellow beneath 

 and reddish-yellow on the upper surface. This fungus 

 also attacks Willow, Poplar, Alder, Acacia, and other 

 hardwoods. 



Polyporus Igniarius (White Rot). Infection takes place 

 through wounds on branches. The decaying wood is 

 first turned a deep brown colour, and then yellowish- 

 white. The sporophores are hard, bracket-shaped, and 

 often 12 inches across. Attacks most broad-leaved trees. 



Polyporus Fomentarius. Attacks Oak, but is chiefly 

 found in Beech. 



